Nokia NSE-1 Series Installation instructions

NSE–1 Series Transceivers
PAMS Technical Documentation
Original 03/98
Disassembly &
Troubleshooting
Instructions

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 2 Original 03/98
CONTENTS
Page No
Disassembly 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trouble Shooting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is totally dead 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming doesn’t work 6. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (1) 8. . . . . . . . . . . . . . . . . . . . . . .
Flash Programming failure (2) 9. . . . . . . . . . . . . . . . . . . . . . .
Power doesn’t stay on, or phone is jammed 10. . . . . . . . . . . . . .
Display Information: Contact Service 11. . . . . . . . . . . . . . . . . . . .
The phone doesn’t register to the network or phone doesn’t make a call 11
Phone register failure 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM card is out of order 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIM Card failure 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (1) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio failure (2) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charger failure 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (1) 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (2) 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (3) 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (4) 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (5) 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (6) 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver Fault (7) 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (1) 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (2) 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter Fault (3) 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 3
Original 03/98
Disassembly
Remove battery
Remove dust cap by fingernail
Remove back cover
screws (4 pcs) Remove C–cover
Carefully remove A–cover
Note snap fixings !
Press strongly towards
arrow direction

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 4 Original 03/98
Remove UI–module
screws (2 pcs)
Remove UI–module
and frame
Remove engine
module screw (1 pc)
Remove RTC–battery
Remove microphone
Remove engine module
Remove antenna by
pulling it straight out

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 5
Original 03/98
Trouble Shooting
The following hints should facility finding the cause of the problem when
the circuitry seems to be faulty. This trouble shooting instruction is di-
vided following section.
1. Phone is totally dead
2. Flash programming doesn‘t work
3. Power doesn‘t stay on or the phone is jammed
4. Display information: Contact Service
5. Phone doesn‘t register to the network or phone doesn‘t make a call.
6. Plug in SIM card is out of order ( insert SIM card or card rejected).
7. Audio fault.
8. Charging fault
The first thing to do is carry out a through visual check of the module. En-
sure in particular that:
a) there are not any mechanical damages
b) soldered joints are OK

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 6 Original 03/98
Phone is totally dead
This means that phone doesn’t take current at all when the power switch
is pressed or when the watchdog disable pin (N100 pin 29) is grounded.
Used battery voltage must be higher than 3.0 V. Otherwise the hardware
of CCONT (N100) prevents totally to switch power on.
Phone is totally dead
YES
Check R118, X300
J232
VBAT is 3.6 V NO Failure in VBAT line
Check X101, X102, L103
YES
Voltage at pin 29 of CCONT (N100)
is 3.6 V
NO Faulty circuit N100
YES
N100 pin 55 (VBB) 2.8 V
N100 pin 25 (VXO) 2.8 V
when PWR switch is pressed
or watchdog disable pin is grounded
NO CCONT (N100) pin 29 0V
when PWR switch is pressed
YES
See section: Power Doesn’t Stay On
YES
Faulty circuit N100
NO
Check UI module
Flash programming doesn’t work
In service places flash programming can be done via system connector
X100.
In flash programming error cases the flash prommer can give some in-
formation about a fault.
The fault information messages could be:
– MCU doesn’t boot
– Serial clock line failure
– Serial data line failure
– External RAM fault
– Algorithm file or alias ID don’t find
– MCU flash Vpp error
In cases that the flash programming doesn’t succeed there is a possibility
to check short circuits between the memories and the MCU (MAD2).
This test is useful to do, when the fault information is: MCU doesn’t boot,
Serial clock line failure or Serial data line failure.

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 7
Original 03/98
The test procedure is following:
1. Connect the short circuit wire between the test points J229 and J230.
2. Switch power on
3. If the voltage level in testpoint J225 is 2.8 V (”1”), the interface is OK. If
there is a short circuit, the voltage level in testpoint J225 stays low and
32kHz square wave signal can be seen in the lines which are al-
ready tested.
One must be noticed that this test can be found only short circuits, not
open pins.
Also upper data lines (15:8) of flash circuit D210 are not included to this
test.
CCONT pin 54( PURX )
MAD pin 38 ( MCUAD0)
MAD pin 134 ( ExtSysResX))selftest
passed J225

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 8 Original 03/98
Flash Programming failure (1)
Flash programming doesn’t work
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V NO
YES
J227 master reset (Purx) = ”1” (2.8 V) NO J228 sleep clock(SCLK)
square wave 32 kHz NO
YES
Faulty circuit N100
or over loaded PurX line
check sleep
clock circuitry
(B100, R154...)
YES
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
NO
J506 (RFC) 13 MHz
800 mV min
YES
check C213, R213
NO
check buffer V705 and
VCXO G600 Check that following lines are correct:
YES
If the fault information from the prommer is:
b) serial data line failure
a) MCU doesn’t boot
c) serial clock line failure
connect:
FCLK (MBUS) line: X100 pin 11 –> D200 pin 112
FTX (fbus_tx) line: X100 pin 13 –> D200 pin 104
FRX (fbus_rx) line: X100 pin 12 –> D200 pin 109
check also pullup and pulldown resistors: R203, R201, R215
OK
GND : X100 pin 14 –> GND
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
N100 is faulty
OK
Enable the selftest function of D200 by connecting
shortcircuit between testpoints J229 and J230
Connect an oscilloscope to testpoint J225 and switch
power on
Voltage level rises to ”1” after power on at testpoint J225 NO
YES
There is a shortcircuit
somewhere in memory control
lines or MCU address lines or
MCU lower (7:0) data lines
There could be open pins in circuits D200 (D211, D240)
If not, the PCB or D200 (D211, D240) is faulty
VBAT is correct
3.6 V
YES

PAMS
Technical Documentation NSE–1
Disassembly & Troubleshooting Instructions
Page 9
Original 03/98
Flash Programming failure (2)
Flash progrmming doesn’t work
YES
Faulty component D210
If the fault information from the prommer is:
External RAM fault
YES
Check pins of SRAM (D220)
Check control lines of SRAM:
RAMSelX ...
Flash progrmming doesn’t work
YES
If the fault information from the prommer is:
Algorithm file or alias ID don’t find, ID is un-
known etc.
YES
Check control lines and upper data lines (15:8)
of FLASH: ROM1SelX...
Check pins of FLASH (D210)
Flash progrmming doesn’t work
YES
If the fault information from the prommer is:
MCU flash Vpp error
YES
Vpp = 3 V in D210 pin 13 (or C212)
Check components C212, R211
YES
NO Vpp > 4.5 V in testpoint J234
YES
NO
Check UI regulator N201
Check regulator N100
C132, V116, C131
OK

PAMS
Technical Documentation
NSE–1
Disassembly & Troubleshooting Instructions
Page 10 Original 03/98
Power doesn’t stay on, or phone is jammed
If this kind of fault has come after flash programming, there are most
probably open pins in ICs.
The soldered joints of ICs: D200 (MAD2), D210 (FLASH), N100
(CCONT), D221 (SRAM) are useful to check at first.
Normally the power will be switched of by CCONT (N100) after 30 se-
conds, if the watchdog of the CCONT can not be served by software.
The watchdog updating can be seen by oscilloscope at pin 50 (DataselX)
of CCONT.
In normal case there is a short pulse from ”1” –> 0 every 8 seconds.
The power off function of CCONT can be prevented by connecting a short
circuit wire from CCONT pin 29 to ground.
Power doesn’t stay on or phone is jammed
EEPROM (D240) pin 8 (VBB) 2.8 V
J522 (VXO) 2.8 V NO
YES
J227 master reset (Purx) = ”1” (2.8 V) NO J228 sleep clock(SCLK)
square wave 32 kHz NO
YES
Faulty circuit N100
or over loaded PurX line
check sleep
clock circuitry
(B100, R154...)
YES
MAD2 (D200) pin 93: 13 MHz sine wave
clock signal: 500 mVpp min.
YES
NO
J506 (RFC) 13 MHz
800 mV min
YES
check C213, R213
NO
check buffer V705 and
VCXO G600
YES
connect the shortcircuit fire from N100 pin 29 to ground (watchdog)
N100 is faulty
OK
VBAT is correct
3.6 V
YES
CCONT watchdog is served?
(pin 50 pulses 1 –> 0)
NO
YES
software is able to run
check UI module
after few seconds, check
BSI and BTEM lines
If power is switched off
Open pins or faulty circuit:
D200, D210, D221, N100
R215